An example of such a function can be f(x) { 1 x∈Q
-1 x∈ R\Q}
A function in mathematics is like a machine that takes input and gives output. There is always a limit for output also called the range or image of the function.
A function has two values output and input. The limit within which input is defined is called the domain or pre-image of the function.
A function is represented as f(x) i.e., f of x or function of x. The input and output have a relation defined for them
A function must follow two rules they are:
It must work for every possible input valueAnd it has only one relationship for each input valueTo know more functions visit:
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6. Insert < >, or = to make the sentence true. (1 point)
3/4 ? 4/7
O>
O<
O=
Answer:
3/4 > 4/7
Step-by-step explanation:
1. Find the LCM of 4 and 7, which is 28
2. Take 3/4 and multiply the numerator and the denominator by 7 (because 7x4=28)
You will end up with 21/28
3. Take 4/7 and multiply the numerator and the denominator by 4 (because 4x7=28)
You will end up with 16/28
Now that the denominators are the same, the fraction with the bigger numerator is the greater fraction. Therefore, 3/4 is the greater than 4/7.
What fraction is not greater than 1/2? 7/8 4/6 3/5 2/5
Answer:this is so ez
Step-by-step explanation: 2/5
solve: a + 1/10 = 5/10.
Answer:
5/10 - 1/10 = 4/10
a = 4/10
4/10 + 1/10 = 5/10
Step-by-step explanation:
Hope it helps! =D
Which expressions are equivalent to -4(-25y + 4 + 50y - 8)? Select all
that apply.
A - 100y - 4
B -2(23y - 5 + 27y - 3)
C (100y + 32) - (200y + 16)
D -16 - 100y
E -(-100y + 16 + 200y - 32)
F
- 300y - 48
The two equivalent expressions to the given one are the ones in options C and E.
C (100y + 32) - (200y + 16)
E -(-100y + 16 + 200y - 32)
Which expressions are equivalent to the given one?We want to see which expressions are equivalent to:
-4*(-25y + 4 + 50y - 8)
Let's distribute that product so we will get:
-4*(-25)*y - 4*4 - 4*50y - 4*-8
100y - 16 - 200y + 32 = -(-100y + 16 + 200y - 32)
Then option E is a correct option
And also is C: (100y + 32) - (200y + 16)
If we keep simplifying this we wil get:
100y - 16 - 200y + 32 = -100y + 16
And here we end.
The only two equivalent expressions are E and C.
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is the linear relationship represented by the table a proportional relationship?
Tickets
Cost
0
$0
The linear relationship
the point (0, 0)
2
$14.50
Choose
4
$29
6
$43.50
a proportional relationship because the ratios between each pair of values are equivalent and the graph
Choose...
through
The linear relationship is a proportional relationship because the ratios between each pair of values are equivalent and the graph passes through the point (0,0).
What is proportional relationship?
Relationships between two variables where their ratios are equal are known as proportional relationships. The fact that one variable is always a constant value multiplied by the other in a proportionate connection is another way to conceive of them. This parameter is referred to as the "constant of proportionality".
We are given points as (2,14.5), (4,29), (6,43.5) and the origin (0,0).
We know that in a proportional relationship the ratios are equal i.e.
[tex]\frac{y_{1} }{x_{1}} = \frac{y_{2} }{x_{2} } = \frac{y_{n} }{x_{n} }[/tex]
So,
⇒ 14.5/2 = 29/4 = 43.5/6 = 7.25
Since, the ratios are same, therefore the linear relationship is a proportional relationship.
The graph of the given situation has been plotted and it can be seen that the graph passes through the origin i.e. (0,0)
Hence, the linear relationship is a proportional relationship because the ratios between each pair of values are equivalent and the graph passes through the point (0,0).
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What are the coordinates of the point on the directed line segment from (−10,−10) to ( − 4 , 2 ) that partitions the segment into a ratio of 5 to 1?
The required point that divides the line into 5:1 is given by (-5,0)
What is the section formula?Let M(x, y) be the point which divides line segment PQ internally in the ratio m : n. PA, MN and QR are drawn perpendicular to x- axis. PS and MB are drawn parallel to x – axis. This is known as section formula.
Given here: A line segment with end points (−10,−10) to ( − 4 , 2 )
Now the coordinates of the point that divides a line in the ratio m:n is given by
x= mx₂+nx₁ /m+n
y=my₂+ny₁/m+n
Thus the co-ordinates are x=5×-4+1×-10 / 5+1
=-30/6
= -5
And y= 5×2+1×-10 / 6
=0
Hence, The required point that divides the line into 5:1 is given by (-5,0)
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problem 1. create two vectors named v and w with the following contents: v : 21,10,32,2,-3,4,5,6,7,4,-22 w : -18,72,11,-9,10,2,34,-5,18,9,2 a) print the length of the vectors b) print all elements of the vectors c) print elements at indices 3 through 7. d) print the sum of the elements in each vector. e) find the mean of each vector. (use r's mean() function) f) sort the vectors in descending order and then print. g) add vectors v and w. h) multiply vectors v and w. i) in vector v select all elements that are greater than zero. j) in vector w select all elements that are less than zero. k) multiply each element of vector v by 6. and then print. l) find maximum and minimum of each vector. m) in each vector, replace all negative values with the average of all numbers in the vector.
Vector v and w have lengths of 11 and contain elements of 21, 10, 32, 2, -3, 4, 5, 6, 7, 4, -22 and -18, 72, 11, -9, 10, 2, 34, -5, 18, 9, 2 respectively. The addition, multiplication, and sorting of both vectors were calculated, as well as the means, maximums, and minimums.
a) The lengths of the vectors v and w are both 11.
b) Vector v contains the elements 21, 10, 32, 2, -3, 4, 5, 6, 7, 4, -22 and vector w contains the elements -18, 72, 11, -9, 10, 2, 34, -5, 18, 9, 2.
c) Elements 3 through 7 of vector v are 2, -3, 4, 5, 6 and elements 3 through 7 of vector w are 10, 2, 34, -5, 18.
d) The sum of the elements in vector v is 60 and the sum of the elements in vector w is 91.
e) The mean of vector v is 5.454545454545455 and the mean of vector w is 8.272727272727273.
f) Vector v is sorted in descending order as 32, 21, 10, 7, 6, 5, 4, 4, 2, -3, -22 and vector w is sorted in descending order as 72, 34, 18, 11, 10, 9, 2, 2, -9, -5.
g) The addition of vectors v and w is 53, 82, 28, 2, 7, 13, 6, 8, -7, 4, -20.
h) The multiplication of vectors v and w is -378, 720, 352, -18.
i) Elements in vector v that are greater than zero are 21, 10, 32, 2, 4, 5, 6, 7, 4.
j) Elements in vector w that are less than zero are -18, -9, -5.
k) Vector v multiplied by 6 is 126, 60, 192, 12, -18, 24, 30, 36, 42, 24, -132.
l) The maximum of vector v is 32 and the minimum of vector v is -22. The maximum of vector w is 72 and the minimum of vector w is -9.
m) In vector v, all negative values are replaced with the average of all numbers in the vector, which is 5.454545454545455. In vector w, all negative values are replaced with the average of all numbers in the vector, which is 8.272727272727273.
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Match the given differential equation with one or more of the solutions. (Select all that apply.) xy' = 4y y = 4x y = 0 y =4 Y = 4x4
The solutions that match the given differential equation are a)y=0 and b)y=2x.
The differential equation is a homogeneous linear differential equation with constant coefficients, which can be written in the form of y" + p(x)y' + q(x)y = 0. The general solution to this type of equation is y = c1e^(rx) + c2e^(rx) where r is the root of the characteristic equation r^2 + p(x)r + q(x) = 0.
In this case, the equation is of the form xy'' - y' = 0. By dividing both sides by x, we get y'' - (1/x)y' = 0, which is a homogeneous linear differential equation with constant coefficients. The characteristic equation is r^2 - (1/x)r = 0. The roots of this equation are r1 = 0 and r2 = 1/x.
Therefore, the general solution to this differential equation is y = c1 + c2x.
y=0 is a solution of the differential equation since it satisfies the equation when plugged in.
y=2x is also a solution of the differential equation since it also satisfies the equation when plugged in.
y=2x^2 and y=2 are not solutions of the differential equation because when plugged into the equation they don't satisfy it.
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The displacement (in centimeters) of a particle moving back and forth along a straight line is given by the equation of motion s = 2 sin Ït + 4 cos Ït, where t is measured in seconds. (Round your answers to two decimal places.)(a) Find the average velocity during each time period.i. [1,2]ii. [1,1.1]iii. [1.1.01]iv. [1.1.001]
The average speed throughout the given time was [1,2] = -2.00 cm/sii. -0.26 cm/siii for [1,1.1]. [1.1,1.01] = 0.17 cm/siv. [1.1,1.001] = 0.02 cm/s
The particle's displacement divided by the passage of time represents its average velocity at each time interval. The displacement of the particle for the above motion equation is given by s = 2 sint + 4 cost. By subtracting the displacement at the beginning and end of the period and dividing it by the change in time, we can determine the average velocity for each time period. As an illustration, the displacement for the time period [1,2] is 2 sin + 4 cos at the beginning of the period and 2 sin + 4 cos at the end of the period. These two figures differ by -4, and one second has passed between them.
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Let y = πx + π. For what value of x is y = π^3?
The value of the variable x = π³ - π/π
What are algebraic expressions?Algebraic expressions are described as mathematical expressions that are comprised of variables, factors, constants, terms and coefficients.
These algebraic expressions are also comprised of arithmetic operations, such as;
DivisionMultiplicationSubtractionFloor divisionAdditionBracketParenthesesFrom the information, we have that;
y = π³
y = πx + π
Substitute the values, we get;
π³ = πx + π
collect like terms
π³ - π = πx
Divide both sides by the coefficient of x
x = π³ - π/π
Thus, the value is x = π³ - π/π
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Help with this equation
Translations between points B and B' and points S and S' are result of using translation vector T(x, y) = (- 3, - 1).
How to determine the translation formula behind two-point transformation
In this problem we find the case of two points being translated by rigid transformation formula. Translations are defined by following equations:
P'(x, y) = P(x, y) + T(x, y)
Where:
P(x, y) - Original point.P'(x, y) - Resulting point.T(x, y) - Translation vector.First, derive translation vector from translation formula:
T(x, y) = B'(x, y) - B(x, y)
T(x, y) = (- 9, - 2) - (- 6, - 1)
T(x, y) = (- 3, - 1)
Second, check that point S' is the image of point S:
S'(x, y) = S(x, y) + T(x, y)
S'(x, y) = (5, 1) + (- 3, - 1)
S'(x, y) = (2, 0)
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What is the value of the expression
10/12 + 3/7
Answer:
= 53/42
Step-by-step explanation:
10/12 is equivalent to: 70/84
3/7 is equivalnt to: 36/84
Then:
10/12 + 3/7 = 70/84 + 36/84
= (70 + 36) / 84
= 106 / 84
= 53 / 42
3xcube+x-200 divide by x-4
When will divide (3x³+x-200) by (x-4) will get 3x²+12x+49 and -4 as remainder.
What is division?Division is the process of splitting a number or an amount into equal parts.
Given is an expression, 3x³+x-200 which is divided by x-4,
Therefore,
(3x³+x-200) / (x-4)
Step 1)Divide the leading term of the dividend by the leading term of the divisor:
3x³/x = 3x²
Multiply it by the divisor: 3x²(x−4)=3x³−12x²
Subtract the dividend from the obtained result:
(3x³+x−200)−(3x³−12x2) = 12x²+x−200
Step 2)Divide the leading term of the obtained remainder by the leading term of the divisor: 12x²/x = 12x
Multiply it by the divisor: 12x(x−4) = 12x²−48x
Subtract the remainder from the obtained result:
(12x²+x−200)−(12x²−48x) = 49x−200
Step 3)Divide the leading term of the obtained remainder by the leading term of the divisor: 49x / x = 49
Multiply it by the divisor: 49(x−4) = 49x−196
Subtract the remainder from the obtained result:
(49x−200)−(49x−196) = −4
Hence, When will divide (3x³+x-200) by (x-4) will get 3x²+12x+49 and -4 as remainder.
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How to solve this problem
Answer:
656 cm sq
Step-by-step explanation:
2 x 10 x 2 x 10 = 400
8 x 2 x 8 x 2 =256
256+400 = 656
When an economy produces a good where the marginal benefit equals the marginal cost it is
At that level of output and price, profit is maximized when marginal revenue and the marginal cost of production are equal:
MR = *TR/*Q
MC = *C/*Q
Eq. = MR = MC
where, MR = Marginal Revenue
MC = Marginal Cost
* = Change in
TR = Total Revenue
Q = Quantity
C = Cost
The marginal revenue rule states that by selecting the amount at which marginal revenue equals marginal cost, we can maximize the net benefit of any action. The activity's net benefit is maximum at this amount.
The corporation eventually reaches the point at which manufacturing any more units will raise the cost of production per unit, which is known as its optimum production level.
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Type the correct answer in each box. Lmk!
There were 0-5 Listeners when the song was released.
The approximate number of listeners who had heard the song after the hour 5 was 15- below 50
The number of listeners was about 29,458 after hour 5842.62/
How can I explain?Alternative forms
Y= 4,637(1.26)ˣ
292131/50,5842,31/50,5.84262 =10³
5842.62
Including polynomial components, such as squared or cubed predictors, is the most popular technique to fit curves to data using linear regression. Typically, the model order is determined by the number of bends required in your line. Each exponent increment causes one additional bend in the curved fitting line.
Curve of Best Fit: a scatter plot curve that best approximates the trend. If the data looks to be quadratic, we use quadratic regression to get the equation for the best-fit curve. We do a cubic regression if it looks to be cubic.
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based on the information in the table, what quantity of reserves would the federal reserve have had to inject into the economy in 1932 to prevent the money supply from falling, given that the public increased the amount of currency it held and that banks increased the reserve-deposit ratio?
The public increased the amount of currency it held and that banks increased the reserve-deposit ratio is $0.66 million.
Now, According to the question:
December 1921
-Currency held by public: $4.59
-Reserve Deposit ratio: 0.095
-Bank reserves: $3.11
-Money supply: $37.3
December 1932
-Currency held by public: $4.82
-Reserve Deposit ratio: 0.109
-Bank reserves: $3.18
-Money supply: $34.0
We know that:
Bank deposits = (Bank reserves)/(Desired reserve-deposit ratio).
The Fed injected $0.30 billion (the public held $0.23 billion as currency and reserves increased by $0.07 billion was held as reserves). However, the money supply still fell by $3.3 billion.
It would have taken an additional 0.109 × $3.3 billion = $0.36 billion in reserves to support $3.3 in additional deposits.
So the answer is $0.30 billion + $0.36 billion = $0.66 billion.
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The given question is incomplete, complete question is :
Based on the information in the table, what quantity of reserves would the Federal Reserve have had to inject into the economy in 1932 to prevent the money supply from falling, given that the public increased the amount of currency it held and that banks increased the reserve-deposit ratio?
December 1921
-Currency held by public: $4.59
-Reserve Deposit ratio: 0.095
-Bank reserves: $3.11
-Money supply: $37.3
December 1932
-Currency held by public: $4.82
-Reserve Deposit ratio: 0.109
-Bank reserves: $3.18
-Money supply: $34.0
Jamie buys p bags of pears for $8 each and m melons for $6 each.
Write an expression to represent how much Jamie spends in all.
The expression to represent how much Jamie spends in all. we may state,0.40x + 0.40y is 8, 0.30x + 0.30y is 6
What is an expression to represent?Set variables to represent the amounts we wish to identify.
Let x = the quantity of p bagsLet y=the quantity of m melonsThen, using these variables, we create equations that fully capture the narrative.Since the overall cost is $8 and $6 the cost of each bags variety varies, we may state0.40x + 0.40y = 8.0.30x + 0.30y =6The total amount of bags purchased together will be represented by the other equation, as Mark said. Once you have those equations, you may solve the problem for the variables x and y by utilising substitution and elimination techniques.The expression to represent how much Jamie spends in all. we may state,0.40x + 0.40y = 8, 0.30x + 0.30yTo learn more about expression refer to:
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Find the measure of a single exterior angle of the regular polygon shown below. If necessary, round to the nearest tenth.
The measure of an exterior angle of the regular polygon shown in the figure is 60°.
What are exterior angle?The angle between a side of a polygon and an extended adjacent side is called its exterior angle.
Given is a polygon, since, it has six vertices, so we can say it is a regular hexagon,
We know that, the sum of interior angles of regular hexagon is 720°
Therefore, one interior angle = 720 / 6 = 120°
If we extend a side of the hexagon, (refer to figure attached in solution)
Then, the interior angle and an exterior angle "A" will make a linear pair,
Therefore,
120° + A = 180°
A = 60°
Hence, the measure of an exterior angle of the regular polygon shown in the figure is 60°.
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What is the best name for this shape? Use the drop-down menus to explain your answer. 55° 125° 125° 55° Click the arrows to choose an answer from each menu. The shape has Choose... It has Choose.... It has Choose... The best name for this shape is Choose... angles that are acute and equal. angles that are obtuse and equal. angles that are right angles.
The best name for this shape is rectangle. There are two sets of parallel sides and two pairs of equal opposite sides in every rectangle.
Four names for rectangles: what are they?Parallelograms, quadrilaterals, and polygons are some other names for rectangles that we use. This is so that it is clear that a rectangle meets the criteria for each of these other forms, as shown by its definition.There are two sets of parallel sides and two pairs of equal opposite sides in every rectangle, hence the answer is that every rectangle is a parallelogram. Thus, it conforms to all of a parallelogram's characteristics.There are two sets of parallel sides and two pairs of equal opposite sides in every rectangle, hence the answer is that every rectangle is a parallelogram.Parallelograms, quadrilaterals, and polygons are some other names for rectangles that we use.To learn more about rectangle refer to:
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A blood test indicates the presence of a particular disease 96% of the time when the disease is actually present. The same test indicates the presence of the disease 0.8% of the time when the disease is not present. Two percent of the population actually has the disease. Calculate the probability that a person has the disease, given that the test indicates the presence of the disease.
The probability of a person that has the disease and indication of the test also shows the presence of the disease is given by 0.92.
Let us consider 'A' represents the test indicate the presence of disease when it was actually present
A = 96%
= 0.96
And 'B' represents the population percent actually has the disease
B = 2%
= 0.02
A' represents the population who represents the disease when actually disease is not present.
A' = 0.08
Probability of a person that has the disease when test also indicates its presence is given by :
P ( A/ B) = P( A∩B) / [ P(A∩B) + P(A'∩B) ]
= ( 0.02 × 0.96 ) / [ ( 0.02 × 0.96 ) + ( 0.02 × 0.08 ) ]
= 0.0192 / 0.0208
= 0.92
Therefore, the required probability of a person having disease when test also indicates it is equal to 0.92.
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I dont understand this
Classify each function as a power function, root function, polynomial (state its degree), rational function, algebraic function, trigonometric function, exponential function, or logarithmic function:
y = (pie)x Power Function
y = xy Exponential Function
y = x2(2-x3) Polynomial (degree of 2)
y = tan t â cos t Trigonometric
y = s / 1+s Algebraic Function
y = sqrt(x3 â 1) / 1+ 3sqrt(x) Root Function
Not sure on these. Thanks!
A power function is a type of function with a variable in the form of an exponent. An exponential function is a type of function that contains a variable in the form of an exponent.
The most common example of this is y = xn, where n is the exponent and x is the independent variable. For example, y = (π)x is a power function with an exponent of x and an independent variable of π.
Exponential Function: An exponential function is a type of function that contains a variable in the form of an exponent. The most common example of this is y = bx, where b is the base and x is the independent variable. For example, y = xy is an exponential function with a base of x and an independent variable of y.
Polynomial: A polynomial is a type of function that has a degree, which is the highest exponent of its variables. For example, y = x2 (2-x3) is a polynomial with a degree of 2 since the highest exponent of its variables is 2.
Trigonometric: A trigonometric function is a type of function that involves trigonometric ratios. The most common example of this is y = tan t â cos t, which uses the trigonometric ratios of tangent and cosine.
Algebraic Function: An algebraic function is a type of function that can be expressed as a combination of polynomials. The most common example of this is y = s / 1+s, which is a combination of polynomials with a numerator of s and a denominator of 1+s.
Root Function: A root function is a type of function that involves a root of a polynomial. The most common example of this is y = sqrt(x3 â 1) / 1+ 3sqrt(x), which uses the root of the polynomial x3 â 1 in the numerator and 3sqrt(x) in the denominator.
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i need to know what it is written out
I think you want to know what written out means? If yes it means when someone writes something down on a book or paper.
Which expression is equivalent to -63y² + 27y?
O-9y(7y-3)
O9y(7y-3)
O-9y(7y + 3)
O9y(7y + 3)
HELP ASAP
Answer:
[tex]9y\left(-7y+3\right)[/tex]Step-by-step explanation:
[tex]-63y^2+27y[/tex]
[tex]-63yy+27y[/tex]
[tex]-9\cdot \:7yy+9\cdot \:3y[/tex]
[tex]9y\left(-7y+3\right)[/tex]
Determine whether the statement below is true or false. Justify the answer. Elementary row operations on an augmented matrix never change the solution set of the associated linear system. A. The statement is true. Each elementary row operation replaces a system with an equivalent system B. The statement is false. Interchanging two rows never changes the solution set of the associated linear system. However, replacing one row by the sum of itself and a multiple of another row can change the solution set of that system. C. The statement is false. Interchanging two rows never changes the solution set of the associated linear system. However, scaling a row by a nonzero constant can change the solution set of that system. D. The statement is true. Elementary row operations are always applied to an augmented matrix after the solution has been found.
Elementary row operations are always applied to an augmented matrix after the solution has been found. So the option D is correct.
Elementary row operations:
1. It is possible to convert a system of linear equations into an equivalent system, or into a new system of equations that has the same solutions as the original system, using these straightforward techniques.
2. In order to convert a matrix to row echelon form, Gaussian elimination is used.
3. Simple row operations on an augmented matrix never alter the underlying linear system's solution set.
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A recent study attempted to estimate the proportion of Florida residents who were willing to spend more tax dollars on protecting the Florida beaches from environmental disasters. Forty- two hundred study? Florida residents were surveyed, Which of the following is the sample used in tho a) all Florida residents b) the 4200 Florida residents surveyed c) all Florida residents who lived along the beaches d) the Florida residents who were willing to spend more tax dollars on protecting the beaches from environmental disasters
The sample used in the study is b) the 4200 Florida residents surveyed. surveyed. To obtain the answer following steps are :
1. Read the question and identify the key words: sample, Florida residents, 4200
2. Consider the given options and eliminate those that don't match
3. Based on the given information and the options, the answer is b) the 4200 Florida residents surveyed.
This is because the sample used in the study was the 4200 Florida residents who were surveyed, and this sample was used to estimate the proportion of all Florida residents who were willing to spend more tax dollars on protecting the beaches from environmental disasters.
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Refer to the following distribution of commissions:Monthly Commissions Class Frequencies$600 up to $800 3800 up to 1,000 71,000 up to 1,200 111,200 up to 1,400 121,400 up to 1,600 401,600 up to 1,800 241,800 up to 2,000 92,000 up to 2,200 4For the preceding distribution, what is the midpoint of the class with the greatest frequency?O 1,500O 1,700O The midpoint cannot be determined.O 1,400
From the given table the greatest frequency is 40,
midpoint of greatest frequency =$2100.
Relative frequency is also referred to as the empirical probability, which is calculated by the division of each frequency by the total number of frequency in the sample.
We can answer the question creating the following table:
Class Frequency Rel. Frequency
$600-$800 3 3/120=0.025
$800-$1000 7 7/120=0.059
$1000-$1200 11 11/120=0.092
$1200-$1400 22 22/120=0.183
$1400-$1600 40 40/120=0.333
$1600-$1800 24 24/120=0.2
$1800-$2000 9 9/120=0.075
$2000-$2200 4 4/120=0.033
Total 120 1
From the above table the greatest frequency is 40,
midpoint of greatest frequency =$2100.
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Solve the equation for N
The value of N would be N = q/(9 + 4uz).
What is algebraic manipulation?
Algebraic manipulation is the process of rearranging mathematical expressions in order to solve equations or to make them easier to understand. It involves the use of mathematical operations and properties such as addition, subtraction, multiplication, division, and the commutative, associative, and distributive properties.
Given:
q - 4Nuz = 9N
To find the value of N, we can use algebraic manipulation.
9N + 4Nuz = q
N(9 + 4uz) = q
N = q/(9 + 4uz)
Hence, the value of N would be N = q/(9 + 4uz).
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Find the difference in the given lengths of the polygons. (7x + 2) units (6x - 5) units
By solving a subtraction, we can write the difference between the lengths as:
|x + 7|
How to find the difference between the lengths?Here we want to find the difference between the two lenghts below:
L₁ = (7x + 2)
L₂ = (6x - 5)
The difference between these can be written as the absolute value of the subtraction, then we will get:
| L₁ - L₂|
We use the absolute value because we don't know which one is the larger value.
Replacing the expressions we will get:
| (7x + 2) - (6x - 5)|
|7x + 2 - 6x + 5|
| x + 7|
That is the difference.
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